Vacuum-sealing jar.



E. Numan. VACUUM SELING JAR.

(Applieatnn lod Nov. 8, 1900.)

(No Mndel.)

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EDWIN NORTON, OF MAYWOOD, ILLINOIS, ASSIGNOR TO THE AUTOMATIC VACUUM CANNING COMPANY, OF CHICAGO, ILLINOIS.

VACUUivi-SEALING JAR.

. SPECIFICATION forming part of Letters Patent No. GLlBO, dated August 20, 1901. Applioationiiled November 3, 1900i Serial No.A 35,318. (No model.)

` J l wood, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Vacuum-Sealing Jars, of which the following is a specification.

`My invention relates to vacuum-sealing preserving-jars.v :o It consists in a preserving-jar, of glass or other suitable material, having an external shoulder, a searning-,ring having an internal shoulder, a packing between said shoulders, an inturned iiange at the lower edge of the I5 scathing-ring compressing the packing between said shoulders and hermeticallysealin g g and locking the seaming-ring to the jar, a

`flange at the upper edgeof the seaming-ring, and a cover having a packing, a Bange or seat `2c for the packing, and a rim or flange folded into a double seam with the flange on the seamingring to firmly compress the packing between the cover and scanning-ring and lock and secure together the ring and cover with great `2 5 strength, tightness, and rigidity and securely confine the packing within and by the folds of the double seam, so that after the cover has been sealed to the jar in vacuum by a vacuum or atmospheric-pressure seal and the 3o cover further secured to the seaming-ring by the double seam the contents of the sealed can may be subjected to any required cooking operation Ywithout danger of the steamg g `pressure thus generated within the `sealed can 3 5 loosening thecover or breakingor rendering` defect-ive the packed seam or joint between the ring and cover.

`In the accompanying drawings, forming a part of this specification, Figure l is a cen- 4o tral vertical sectional view showing the top portion or neck of a vacuum-sealing preserving-jar embodying my invention with the coverloosely in place thereonand ready to be sealed `and secured thereto by a vacuum or atmospheric-pressure seal by placing the lar view showing the [ianges of the cover and scanning-ring of the vacuum sealed jar double-seamed together.

In the drawings, A represents the jar; a,tl1e 55 external shoulder on its neck; B, the seaming-ring; b, its internal shoulder; C, the packing between 'said shoulders a and ZJ, and b the inturned flange at the lower edge of the seaming-ring, locking the ring to the jar and 6o compressing the packing C, so as to hermetically seal and secure the ring to the jar. The seaming-ring B has a lateral ilange b2 at its upper edge, forming a smoothshoulder for compressing the packing F, which is interposed between the ringB and cover D. The cover D has a flange or shoulder cl, surrounded by the packing F, and a seaming-rim d', which is folded into a double seam d2 with y said iange b2 on the ring B, thus rigidly and 7o unyieldingly compressing and confining the packing F within and by the folds of said double seam and securely uniting the cover to the scanning-ring. Protecting-disks G and g are interposed between the coverD and the upper face aof the jar-mouth to prevent the contents of the jar from coming in contact with the sheet-metal cover D 0r Elearningring B. i

ln operation, after the cover of the filled 8o preserving-jar has been sealed and secured thereto in vacuum by a vacuum or atmospheric-pressure seal, as illustrated in Fig. 2, the sealed jar is removed from the receiver of the air-pump and placed in a double-seaming machine of any suitable or customary construction and the flanges d and b2 formed into a double seam d?, thus rigidly uniting the two and tightly compressing and confining the packing F between the cover and sealn- 9o ing-ring and the folds of said double seam. The vacuum or atmospheric-pressure seal, as illustrated in Figs. 2 and 3, collapses or inwardly curves the liexible sheet-metal cover D, owing to the vacuum within the jar and the atmospheric pressure outside thereof.

l. The vacuum-sealing preserving-j ar comprising in combination a jar having an external shoulder, a seaming-ring having an inter- 10o nal shoulder, a packing between said shoulders, an inturned ange at the lower edge of said seaming-ring compressing said packing and locking and hermetically sealing said ring to said jar, a flange at the upper edge of said ring, a cover having a iiange or shoulder, a packing thereon and a seaming-rim and a double seam formed by folds in said rim of the cover and said flange at the upper edge of the seaming-ring, substantially as specified.

2. The combination with a jar, of a seaming-ring hermetically sealed and .secured to the said jar, a cover, a packing between the cover and seaming-ring, said coverbeing hermetically sealed and secured to said seamingring by a vacuum or atmospheric-pressure seal collapsing or inwardly curving said cover and a double seam locking and securing the l cover to the Seaming-ring and firmly comdouble seam d2 uniting said cover and ring', substantially as specified.

4. The vacuum-sealed preserving-jar coinprising in combination jar A havingshoulder a, packing C, seaming-ring B having shoulder b, flanges b and 52, andv cover D having flange or shoulder d, rim d', packing F and double seam d2 uniting said cover and ring, and a protecting-disk between the jar and cover, substantially as specified.

5. The vacuum-sealed preservingjar comprising a jar A, seaming-ring B hermetically sealed and secured to said jar by a packed joint, a cover D having a packed joint between it andthe seaming-ring and hermetically sealed and secured thereto .by a vacuum or atmospheric-pressure seal and a double EDWIN NORTON.

Witnesses:

' EDWIN NORTON, L. E. CURTIS. 

